Why can't I post to communities using iOS device

You'll never see anybody report back. Unfortunately it just doesn't work that way.

... leaving me heartbroken ... thankless...

You've got it all wrong. They show their thanks by immediately getting to work on the problem, hardly having time to reply to each report. Besides they gave you a Level 1 avatar on your test didn't they ? 🙂

I said:

... I can't remember seeing anyone 'report back' after going off to work it out with the Hosts and/or Engineers

methinx YOU got my point bassackwards... 👿 -

But on this day, i am thankful that you are BobFather

Well you could splain it to me or warm up another slice of pumpkin pie and see if there are still any games on. I vote pie ala mode.

No pie... Ghirardelli Brownies! La Mode Fraise Galore! (w/ Hershey's Syrup)

Send the poor afflicted user off to the Hosts/AppleJiveTeam when we cannot help with 'behind the curtain' stuff - they never return from behind the curtain! {Flying Monkeys?}